1 In the world of sharks, size really does not matter!2 Look at the cookie-cutter shark. It is just about twenty inches long. Small as it is, though, the fish is fearless. It never tries to stay clear from a bigger fish. As a matter of fact, it loves to be near one. And if there is no bigger fish around, it "advertises" by producing light from its belly.3 Why does the cookie-cutter shark want to hang out with a bigger fish?